NEET 2025 Biology Weightage: Chapter-wise breakdown for Class 11, 12, important topics
NEET 2025 exam will be held on May 4. NEET Biology will have 90 questions, contributing 50% of the total marks.
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Vikas Kumar Pandit | February 22, 2025 | 06:18 PM IST
NEW DELHI: The National Testing Agency (NTA) will be conducting the National Eligibility-cum Entrance Test Undergraduate (NEET UG 2025) on May 4, 2025. Candidates appearing for the NEET UG 2025 exam should be aware of the subject-wise weightage to plan their preparation effectively.
Medical aspirants seeking admission to Bachelor of Medicine and Bachelor of Surgery (MBBS), Bachelor of Dental Surgery (BDS), Ayurveda, Yoga and Naturopathy, Unani, Siddha, and Homoeopathy (AYUSH), and other undergraduate medical courses in India must appear for the National Eligibility cum Entrance Test (NEET).
The NEET UG 2025 registration process is underway and the last date to fill out the application form is March 7, 2025. The NEET UG 2025 registration link is available on the official website at neet.nta.nic.in.
The NEET question paper consists of 180 multiple-choice questions, each carrying four marks. The questions are based on the Class 11 and 12 syllabus, covering Physics, Chemistry, and Biology.
The weightage of biology in the NEET exam is highest among the three subjects. Biology will have 90 questions, contributing 50% of the total marks. The biology section is divided into two parts: botany and zoology, each containing 45 questions. Physics and chemistry will each have 45 questions.
NEET 2025 Biology: Class 11, 12 chapter-wise weightage
Medical aspirants can check the NEET 2025 Biology chapter-wise weightage from the table given below.
Unit | Chapters | Class 11 weightage |
1 | Diversity of Living Organisms | 14% |
The Living World | ||
Biological Classification | ||
Plant Kingdom | ||
Animal Kingdom | ||
2 | Structural Organisation in Plants & Animals | 5% |
Morphology of Flowering Plants | ||
Anatomy of Flowering Plants | ||
Structural Organisation in Animals | ||
3 | Cell: Structure and Function | 9% |
Cell-The Unit of Life | ||
Biomolecules | ||
Cell Cycle and Cell Division | ||
4 | Plant Physiology | 6% |
Transport in Plants | ||
Mineral Nutrition | ||
Photosynthesis in Higher Plants | ||
Respiration in Plants | ||
Plant - Growth and Development | ||
5 | Human Physiology | 20% |
Digestion and Absorption | ||
Breathing and Exchange of Gases | ||
Body Fluids and Circulation | ||
Excretory Products and Their Elimination | ||
Locomotion and Movement | ||
Neural Control and Coordination | ||
Chemical Coordination and Integration | ||
Unit | Chapters | Class 12 weightage |
6 | Reproduction | 9% |
Reproduction in Organisms | ||
Sexual Reproduction in Flowering Plants | ||
Human Reproduction | ||
Reproductive Health | ||
7 | Genetics and Evolution | 18% |
Principles of Inheritance and Variation | ||
Molecular Basis of Inheritance | ||
Evolution | ||
8 | Biology and Human Welfare | 9% |
Human Health and Diseases | ||
Strategies for Enhancement in Food Production | ||
Microbes in Human Welfare | ||
9 | Biotechnology and its Applications | 4% |
Biotechnology - Principles and Processes | ||
Biotechnology and its Application | ||
10 | Ecology and Environment | 6% |
Organisms and Populations | ||
Ecosystem | ||
Biodiversity and its Conservation | ||
Environmental Issues |
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